BSOD getting very common Windows 7 64-bit

Hi I recently upgraded my PC to:

Intel i5 2500k 3.3ghz
4 gig DDR3
Geforce 560 gtx
Windows 7 64 bit

Everytime I play games it ussualy BSoD's now it's started on the desktop I just had my first desktop crash today, it's getting really annoying and the usual error is PSN List Corrupt, I really need a way to fix this, I can provide more info if needed.
 
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